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public:gsoc:dv_support_request [2016/08/02 20:06] (current)
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 +This seems interesting. Here's the original request email:
 +
 +
 +Does CCExtractor have support for extracting captions contained in the VAUX area on DV streams, and I just can't figure out how to use it?
 +
 +If not, are there any plans to integrate this into CCExtractor?​ It seems to me that the only software available to do this is MacCaption, which costs many hundreds of dollars.
 +
 +Here are some links to specifications I have run across:
 +https://​dvswitch.alioth.debian.org/​wiki/​DV_format/​
 +http://​ffmpeg.sourcearchive.com/​documentation/​0.6/​dvdata_8h-source.html
 +
 +This page contains links to two DV-stream-containing files that supposedly contain captions in their streams, meant for testing one's equipment chain:
 +http://​www.cpcweb.com/​dv/​dv-hardware.htm
 +http://​www.cpcweb.com/​samples/​CPCDemo_DV_720x480_CC.mov
 +http://​www.cpcweb.com/​samples/​CPCDemo_DV_720x480_CC.avi
 +
 +To extract the DV stream from those containers while retaining the VAUX stream, apparently one can use
 +http://​www.kinodv.org/​article/​view/​182/​1/​11/​
 +according to
 +https://​lists.libav.org/​pipermail/​ffmpeg-user/​2010-March/​024594.html
 +
 +Here is a discussion where someone wants to transcribe a VHS via a DV camera while preserving closed captions. It seems they gave up and used (bought?) a DVD/VHS combo machine to dump directly to MPEG2, preserving Line 21 at the cost of quality and edit-ability:​
 +https://​discussions.apple.com/​thread/​764469?​start=0&​tstart=0
 +
 +
 +If one wants to transcribe an NTSC source with captions and already owns a good analog source (LaserDisc, SVHS) and DV-based digitizer, it would be nice to have this capability in CCExtractor'​s arsenal of features.
 +
 +
 +Thanks for your time and consideration.
  
  • public/gsoc/dv_support_request.txt
  • Last modified: 2016/08/02 20:06
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